Fics like The Last Prince of Tenebrae

A prompt I'm filling for the kinkmeme. Lunafreya and Ravus Nox Fleuret used to have a younger brother. Prompto Argentum used to have another name. The revelation of Prompto's origins, and his relationship to Luna through their letters, drives him to try and help Noctis achieve his destiny, no matter the cost. Beware, there are endgame spoilers throughout! (Though, I should note, some things will certainly change.)

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